<?php

/*
 * Pickle
 *
 *
 * @license
 *
 * New BSD License
 *
 * Copyright © 2015-2015, Pickle community. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Hoa nor the names of its contributors may be
 *       used to endorse or promote products derived from this software without
 *       specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

namespace Pickle\Package\Util\JSON;

use Composer\Package\Loader\LoaderInterface;
use Exception;
use InvalidArgumentException;
use RuntimeException;

class Loader
{
    protected $loader;

    public function __construct(LoaderInterface $loader)
    {
        $this->loader = $loader;
    }

    /**
     * @param string $path
     *
     * @return \Pickle\Base\Interfaces\Package
     */
    public function load($path)
    {
        if (is_file($path) === false) {
            throw new InvalidArgumentException('File not found: ' . $path);
        }

        $json = @json_decode(file_get_contents($path));

        if ($json === false) {
            $error = error_get_last();
            $exception = null;

            if ($error !== null) {
                $exception = new Exception($error['message'], $error['type']);
            }

            throw new RuntimeException('Failed to read ' . $path, 0, $exception);
        }

        $this->validate($json);

        return $this->loader->load((array) $json);
    }

    protected function validate($json)
    {
        $schema = json_decode(file_get_contents(__DIR__ . '/../../../../vendor/composer/composer/res/composer-schema.json'));
        $validator = new \JsonSchema\Validator();
        $validator->check($json, $schema);

        if ($validator->isValid() === false) {
            $message = '';

            foreach ($validator->getErrors() as $error) {
                $message .= sprintf('[%s] %s', $error['property'], $error['message']) . PHP_EOL;
            }

            throw new RuntimeException($message);
        }
    }
}

/* vim: set tabstop=4 shiftwidth=4 expandtab: fdm=marker */
